Replace DW3210 with DW3220

Wireless Connectivity Ultra-Wideband
1

Hi,
is it possible to replace DW3210 module with DW3220 IC but with just one antenna used?
Since DW3210 is not available on sites like mouser or digikey and we would like to test module with only one antenna to use TDoA and start with using PDoA in future. Looking forward for any suggestions.
I was thinking to make it something like this:

dw3220_1ant
dw3220_1ant1399×727 15.7 KB

2

Okaay this seems to say the same but jest to be sure :smiley:

proof
proof1282×165 18.5 KB

3

Hi @MartinSMG
there is a picture at the end of the datasheet:
image

Cheers
JK

4

Hi @leapslabs,
I thought that this is solution for DW3210 only not that it could be used for DW3220 in case of not using PDoA.

5

Hi @MartinSMG
Im not a Qorvo guy so I cant say it for a 100%, but they very likely the same but in different packing.

Cheers
JK

6

Hi @leapslabs ,
okay we will try that, thank you.

7

Hi @MartinSMG,

Did you this test ? Is it working ? I would like too used the DW3220 with only one antenna. I have try with a 50Ohm resistor with and without 2pF serial capacitor but it’s not working.

Regards,
BenSud

8

Hi, it was a while ago, I am not sure but modules wihere we have used it were working ok as we remember.

9

Hi @BenSud
if you need to use only single antenna it is better to use the DW3210 as the DW3220 contains internal RF switch which introduce a small attenuation so you will have a slightly worse reception.

Regarding the unused RF2 port - it is highly recommended to Ground the unused RF port via the 50R resistor as there is some small cross talk across the RF ports. However even without the 50R it should work OK.

Cheers
JK

10

Thanks very much for your answers @MartinSMG and @leapslabs.

I will used the DW3210.